MAX30100 Pulse Oximeter & Heart Rate Sensor Module

Product Name

MAX30100 Pulse Oximeter & Heart Rate Sensor Module

Primary Function

Measures blood oxygen saturation (SpO₂) and heart rate using optical sensing

Sensor IC

MAX30100 (Integrated pulse oximetry and heart-rate monitor sensor)

Operating Voltage

1.8V – 5.5V (typically used with 3.3V or 5V microcontrollers)

Communication Interface

I2C (SCL, SDA) – 7-bit I2C address: 0x57

Data Output

– SpO₂ (%): Blood oxygen saturation – Heart Rate (BPM): Beats per minute

Key Features

Integrated LEDs, photodetector, optical elements, and low-noise analog signal processing

LED Wavelengths

– Red LED: ~660 nm – IR LED: ~880 nm

Onboard Components

Pull-up resistors for I2C, onboard power regulator (depending on board version), LED indicator

Applications

Health monitoring, fitness trackers, biomedical devices, IoT healthcare, wearable prototypes, sleep studies

Compatible Platforms

Arduino, ESP32, STM32, Raspberry Pi, and other I2C-supported microcontrollers

Professional Use Case

Widely used in portable and wearable devices to track cardiovascular health metrics in real time

Expert Commentary

MAX30100 combines affordability with decent accuracy, making it ideal for learning, prototyping, and non-critical health applications

Usage Tips

Requires stable placement and finger contact for accurate readings; best used with averaging algorithms and noise filtering

Limitations

Not suitable for clinical or medical diagnostic purposes; affected by ambient light and motion

Operating Temperature Range

-40°C to +85°C

Compliance

RoHS Compliant

Stock & Availability

In stock; available in unit packs and bulk for educational kits, health-tech DIY, and embedded development